/*
 * Copyright 2016 Crown Copyright
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *     http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */

package stroom.util.shared;

public final class CompareUtil {
    private CompareUtil() {
    }

    public static int compareLong(final Long l1, final Long l2) {
        if (l1 == null && l2 == null) {
            return 0;
        }
        if (l1 == null) {
            return -1;
        }
        if (l2 == null) {
            return +1;
        }
        return l1.compareTo(l2);
    }

    public static int compareInteger(final Integer l1, final Integer l2) {
        if (l1 == null && l2 == null) {
            return 0;
        }
        if (l1 == null) {
            return -1;
        }
        if (l2 == null) {
            return +1;
        }
        return l1.compareTo(l2);
    }

    public static int compareBoolean(final Boolean l1, final Boolean l2) {
        if (l1 == null && l2 == null) {
            return 0;
        }
        if (l1 == null) {
            return -1;
        }
        if (l2 == null) {
            return +1;
        }
        return l1.compareTo(l2);
    }

    public static int compareString(final String l1, final String l2) {
        if (l1 == null && l2 == null) {
            return 0;
        }
        if (l1 == null) {
            return -1;
        }
        if (l2 == null) {
            return +1;
        }
        return l1.compareToIgnoreCase(l2);
    }
}
